Lectures Delivered at the Royaumont Seminar, Royaumont, 25 26 June 1974
Automotive Electronics II, International Congress, Detroit, 24-28 Febr., 75
Int. Conf. on Electric Vehicle Development, London 31 May - 1 June, um 1976
Shuttle pointing of Electro-Optical experiments, Febr. 10-13, 1981; Los Angeles, USA
Proc. of SPIE, NASA-ESA spacelab systems and programs, April 23-24, 1981, Washington, USA
Transport for disabled people : disabled people and cars ; ECMT seminar, 12th - 13th April 1988
Transport for people with mobility handicaps : information and communication
Prospects for East-West European transport : International seminar Paris 6th - 7th December 1990
Güterverkehrsströme in Europa : Horizont 2000 plus; 2. - 3. April 1992 in Nürnberg
Sicher fahren in Europa : Referate des Symposiums 1994, 7. bis 8. Juni 1994 in Baden-Baden
Why do we need railways? : international seminar 19 - 20 January 1995